New Tartrate-Derived Bis-Oxazoline Ligands
for Enantioselective Cyclopropanation and Aziridination of Alkenes.
A.M. Harm, J.G. Knight and G. Stemp,
Synlett, 1996, 677.
Abstract: Two novel
bis-oxazolines have been prepared from a readily available derivative of
diethyl L-tartrate. Enantioselective copper catalysed aziridination and
cyclopropanation of styrene were carried out using and as chiral ligands
to give products in up to 69% e.e.
